Consider two submarines A and B traveling through water. Submarine A is moving at 5.00 m/s. Submarine B is moving at 8.00 m/s while emitting a sonar wave at a frequency of 1.20 × 103 Hz. The speed of sound in water is 1.50 × 103 m/s and there is no wind. Enter the answers in scientific notation. What frequency is detected by an observer riding on submarine A as the submarines approach each other? What is the observed wavelength of the sonar wave as the submarines approach each other?

A3030 cmcm wrench is used to loosen a bolt with a force applied 0.30.3 mm from the bolt. it takes 6060 nn to loosen the bolt when the force is applied perpendicular to the wrench. how much force would it take if the force was applied at a 3030 degree angle from perpendicular? a 3030 cmcm wrench is used to loosen a bolt with a force applied 0.30.3 mm from the bolt. it takes 6060 nn to loosen the bolt when the force is applied perpendicular to the wrench. how much force would it take if the force was applied at a 3030 degree angle from perpendicular?

Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)

What is the freezing point of radiator fluid that is 50% antifreeze by mass? kf for water is 1.86 ∘c/m.